@article{article_1194822, title={Effects of Different Culture Media Compositions on In Vitro Micropropagation from Paradox Walnut Rootstock Nodes}, journal={Gazi University Journal of Science Part A: Engineering and Innovation}, volume={9}, pages={500–515}, year={2022}, DOI={10.54287/gujsa.1194822}, author={Dirlik, Cem and Kandemir, Hacer and Çetin, Nurberat and Şen, Senem and Güler, Begüm and Gürel, Aynur}, keywords={Micropropagation, Walnut, Juglans regia L., Paradox, In vitro}, abstract={<div style="text-align:justify;">The aim of this study is to establish an effective protocol for in vitro micropropagation from node explants of the ’Paradox’ (Juglans regia x J. hindsii) rootstock. In the first stage of the study, the node explants were cultured in semi-solid media after being exposed to different sterilization methods. The most effective sterilization method was observed as ST2 with the lowest darkening rate (4 %). According to the results, SP4 medium provided the highest number of shoots per unit explant (1.05 shoots/explant) and 100 % shoot formation, SP2 medium provided the best mean shoot length (1.6 cm) and the mean number of nodes per unit explant (7.95 nodes/explant). Best root induction was provided from ½ Modified MS medium containing 4 mg/L IBA with 30 g/L sucrose. For root induction explants were retained under dark conditions for 7 days at 24±2oC. In order to ensure root formation and elongation, shoot explants with root induction cultured in a 16-hour photoperiod (3500 lux) for 21 days in different nutrient media containing 2.4 mg/L Gelrite, hormone-free and mixed with vermiculite (1:1 v/v) and was rooting rate is 45.45 % in ¼DFe medium. </div>}, number={4}, publisher={Gazi University}, organization={EBİLTEM-TTO}